Individuals who are not physically active are at risk for developing heart disease, stroke, and diabetes. Using motivational print materials is one way to encourage individuals to increase their physical activity. This study will evaluate the effect that an enhanced version of an individualized, print-based motivational program has on increasing physical activity among sedentary individuals.

Study researchers will develop individualized reports, manuals, and tip sheets that include feedback and strategies for increasing physical activity for each participant. Materials will be mailed to participants 14 times throughout the year.

Participants in the enhanced intervention will receive additional materials that focus on increasing social support, self regulation, and outcome expectations, as well as materials on how to effectively monitor physical activity levels. They will also attend one study visit to assess their goals with the research staff.

Experimental: 2

Enhanced version of the print-based, individually tailored motivational program

Behavioral: Individualized Print-Based Motivational Program

Study researchers will develop individualized reports, manuals, and tip sheets that include feedback and strategies for increasing physical activity for each participant. Materials will be mailed to participants 14 times throughout the year.

Participants in the enhanced intervention will receive additional materials that focus on increasing social support, self regulation, and outcome expectations, as well as materials on how to effectively monitor physical activity levels. They will also attend one study visit to assess their goals with the research staff.

Detailed Description:

Currently, only 32% of adults in the United States participate in regular physical activity. Several healthcare organizations, including the Centers for Disease Control and Prevention, the National Institutes of Health, and the American Heart Association recommend that adults engage in a minimum of 2 ½ hours of physical activity each week. In a previous study, individuals who received motivational print materials in the mail increased their weekly physical activity more than individuals who received no motivational materials or who received motivational support over the telephone. However, about half of those who were mailed the print materials still did not reach the recommended goal of 2 ½ hours of physical activity per week. The purpose of this study is to compare the effectiveness of an enhanced version of an individualized, print-based motivational program versus a previously tested print-based motivational program at increasing physical activity levels in sedentary individuals.

This study will enroll healthy, sedentary individuals. Participants will be randomly assigned to either a print-based, individually tailored motivational program or an enhanced version of the same program. All participants will attend a baseline study visit, which will include body measurements, physical activity assessments, and health and psychological questionnaires. A select group of participants will also take part in an exercise test. Participants will then document their monthly physical activity. Study researchers will use this information, as well as the completed questionnaires, to develop individualized reports, manuals, and tip sheets that include feedback and strategies for increasing physical activity for each participant. Materials will be mailed to participants 14 times throughout the year. Participants in the enhanced intervention will receive additional materials that focus on increasing social support, self regulation, and outcome expectations, as well as materials on how to effectively monitor physical activity levels. They will also attend one study visit to assess their goals with the research staff. At Months 6 and 12, baseline evaluations will be repeated and all participants will be interviewed to assess physical activity levels.

Eligibility

Ages Eligible for Study:

18 Years to 65 Years

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

Yes

Criteria

Inclusion Criteria:

In good general health

Sedentary

Able to speak and read English

Planning to live in the area for the duration of the study

Exclusion Criteria:

Currently participates in 91 or more minutes of moderate or vigorous physical activity per week

Heart disease

Cerebrovascular disease

Peripheral vascular disease

Chronic obstructive pulmonary disease

Diabetes

High blood pressure

History of gastric bypass surgery

Psychoses

Any serious medical problem that would make exercise unsafe or unwise

Prior participation in a hospital-based or medically supervised weight loss program

Excessive alcohol consumption

Pregnant or plans to become pregnant

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00367029